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Undetectable AI vs. Rewritify: What’s the Greatest AI Humanizer in 2025?

Between AI detection paranoia and the wrestle to make ChatGPT sound much less… nicely, ChatGPT-ish, instruments like Undetectable AI and Rewritify have carved out fairly the area of interest for themselves. They promise to take robotic textual content and infuse it with these little human quirks all of us have in our writing — however do they really ship?

As somebody who’s been down this rabbit gap, I had the very same query. That is why I’ve put each platforms head-to-head throughout readability, detection assessments, and pricing. The outcomes? Let’s simply say that whereas each instruments do what they declare, one among them persistently outperforms in ways in which made me do a double-take.

However which one? Let’s discover out.

What are Undetectable AI and Rewritify?

Most college students have gone by means of false accusations of utilizing AI for his or her schoolwork. AI humanizers are made to resolve that.

Undetectable AI and Rewritify are AI humanizers and bypassers which flip one thing that reads like AI into one thing extra human-sounding. That is doable by eradicating widespread AI markers (repetitions, overused AI phrases, and hallucinations) and including just a few intentional errors to humanize your content material.

You possibly can learn extra about Undetectable AI in our full evaluate right here.

Undetectable AI vs. Rewritify: Readability

Elm bushes, as soon as widespread, are deciduous bushes identified for his or her vase-like form and serrated leaves. They thrived in temperate areas, however Dutch elm illness decimated populations. Some species, just like the American elm, are recovering by means of disease-resistant cultivars. Elms present shade and habitat, taking part in a significant function in ecosystems.

Elms, as soon as widespread, are deciduous bushes with a vase form and serrated leaves. They grew in cooler areas, however Dutch elm illness killed them. Some species, like American elm, are coming again with illness resistant cultivars. Elms shade and dwell in, have an amazing ecological operate.

Deciduous bushes, elm bushes, as soon as ubiquitous, are characterised by their vase-like form and serrated leaves. They flourished in temperate areas, however Dutch elm illness exterminated numbers. Some species are coming again because of new disease-resistant cultivars, such because the American elm. Elms are shade bushes that supply habitat and are an vital a part of ecosystems.

The very first thing that jumps out is tone and readability. Undetectable AI leans easy and direct, virtually stripped to the bone, whereas Rewritify is extra overrated — generally awkwardly so. I imply — “elm bushes, as soon as ubiquitous, are characterised by their vase-like form” sounds prefer it got here from a thesaurus-fueled fever dream. 

Rewritify takes liberties with phrasing (“exterminated numbers”? Actually?) that muddy which means as an alternative of clarifying it. Grammar-wise, it’s principally intact, however the sentence development feels pressured and unnatural.

Undetectable AI, then again, isn’t flawless — it drops articles (“American elm” as an alternative of the American elm) and has the clunky line “Elms shade and dwell in,” which reads like somebody hit “shuffle” on a grammar app. Nonetheless, it is extra devoted to the unique and feels simpler to digest. The core message stays intact, even when the polish is lacking. 

Between the 2, Undetectable AI is tough across the edges, however Rewritify overreaches and finally ends up sounding robotic. If we’re going for closeness to the supply and readability, Undetectable AI takes the win — arms down.

Undetectable AI vs. Rewritify: Bypassing AI Detection

Take a look at #1

Undetectable AI: Efficiently passes as human!
AI Probability Rating: 0%

Rewritify: Efficiently passes as human!
AI Probability Rating: 0%

Take a look at #2

Undetectable AI: Efficiently passes as human!
AI Probability Rating: 0.1%

Rewritify: Detected as AI-generated
AI Probability Rating: 100%

Take a look at #3

Undetectable AI: Efficiently passes as human!
AI Probability Rating: 0.0%

Rewritify: Efficiently passes as human!
AI Probability Rating: 0%

Take a look at #4

Undetectable AI: Efficiently passes as human!
AI Probability Rating: 0%

Rewritify: Efficiently passes as human!
AI Probability Rating: 1%

Take a look at #5

Undetectable AI: Efficiently passes as human!
AI Probability Rating: 0%

Rewritify: Detected as AI-generated
AI Probability Rating: 100%

Take a look at #6

Undetectable AI: Efficiently passes as human!
AI Probability Rating: 0.9%

Rewritify: Efficiently passes as human!
AI Probability Rating: 0%

Take a look at #7

Undetectable AI: Efficiently passes as human!
AI Probability Rating: 0%

Rewritify: Detected as AI-generated
AI Probability Rating: 100%

Total Rating

Undetectable AI vs. Rewritify: Pricing

Let’s speak about pricing as a result of — let’s be actual — your pockets issues. 

Undetectable AI’s pricing construction is fairly easy: $5/mo for his or her yearly plan with a 50% low cost or $19/mo for his or her month-to-month choice. Each plans include a phrase restrict — 10,000 and 20,000 phrases respectively — with the flexibility to scale as much as 380,000 phrases if wanted.

On the flip facet, Rewritify provides three tiers: Primary at $14/mo for five,000 phrases, Final at $24/mo for 50,000 phrases, and an Limitless choice at a whopping $49/mo. The worth proposition is crystal clear right here — Rewritify’s Final plan provides you 5x the phrases in comparison with their Primary plan for lower than double the value. 

However this is the place it will get attention-grabbing: Undetectable AI’s yearly plan at $5/mo for 10,000 phrases completely demolishes Rewritify’s Primary plan which costs practically triple for half the phrases.

So, Which Ought to You Choose?

I broke this down into three classes: readability, bypassing AI detection, and pricing — unsurprisingly, Undetectable AI received all three.

It’s simply miles higher than the closest competitors. The one factor Undetectable AI lacks is ideal readability, and it’ll be arduous to not advocate it to everybody.

As for Rewritify, it’s actually good, however I simply don’t assume it’s a worthwhile expense. It doesn’t do something that Undetectable AI can’t, and it’s much less versatile in pricing. To not point out that they’re a bit stingy with regards to free trials (80 phrases most per account in comparison with Undetectable AI’s 200 phrases + every day spins at no cost phrases), which makes their software extra inaccessible.

One factor earlier than you go: all the time use these instruments for good. With that in thoughts, I extremely advocate checking this text out. Good luck!

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